おもomoいつくitsukuおもomoitsuku
1.

To suddenly conceive an idea or thought that presents itself unexpectedly.

2.

To recall or generate a notion or solution while engaging in mental activity.

3.

To formulate a plan or response in a moment of inspiration or creativity.

4.

To experience the emergence of a thought in one's consciousness, often spontaneously.

Example:

いい考えを思いついた。